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authorArnaldo Carvalho de Melo <acme@redhat.com>2007-03-10 22:16:10 -0300
committerDavid S. Miller <davem@sunset.davemloft.net>2007-04-25 22:24:58 -0700
commitbbe735e4247dba32568a305553b010081c8dea99 (patch)
tree95d96619c85785a47ccee48965b68d99cf946854 /net/packet
parente7dd65dafda5737a983c04d652a69ab8da78ee3f (diff)
[SK_BUFF]: Introduce skb_network_offset()
For the quite common 'skb->nh.raw - skb->data' sequence. Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/packet')
-rw-r--r--net/packet/af_packet.c8
1 files changed, 4 insertions, 4 deletions
diff --git a/net/packet/af_packet.c b/net/packet/af_packet.c
index 1225e751b3f..a059cc7be67 100644
--- a/net/packet/af_packet.c
+++ b/net/packet/af_packet.c
@@ -491,7 +491,7 @@ static int packet_rcv(struct sk_buff *skb, struct net_device *dev, struct packet
skb_push(skb, skb->data - skb_mac_header(skb));
else if (skb->pkt_type == PACKET_OUTGOING) {
/* Special case: outgoing packets have ll header at head */
- skb_pull(skb, skb->nh.raw - skb->data);
+ skb_pull(skb, skb_network_offset(skb));
}
}
@@ -595,7 +595,7 @@ static int tpacket_rcv(struct sk_buff *skb, struct net_device *dev, struct packe
skb_push(skb, skb->data - skb_mac_header(skb));
else if (skb->pkt_type == PACKET_OUTGOING) {
/* Special case: outgoing packets have ll header at head */
- skb_pull(skb, skb->nh.raw - skb->data);
+ skb_pull(skb, skb_network_offset(skb));
}
}
@@ -613,7 +613,7 @@ static int tpacket_rcv(struct sk_buff *skb, struct net_device *dev, struct packe
if (sk->sk_type == SOCK_DGRAM) {
macoff = netoff = TPACKET_ALIGN(TPACKET_HDRLEN) + 16;
} else {
- unsigned maclen = skb->nh.raw - skb->data;
+ unsigned maclen = skb_network_offset(skb);
netoff = TPACKET_ALIGN(TPACKET_HDRLEN + (maclen < 16 ? 16 : maclen));
macoff = netoff - maclen;
}
@@ -1145,7 +1145,7 @@ static int packet_recvmsg(struct kiocb *iocb, struct socket *sock,
aux.tp_len = PACKET_SKB_CB(skb)->origlen;
aux.tp_snaplen = skb->len;
aux.tp_mac = 0;
- aux.tp_net = skb->nh.raw - skb->data;
+ aux.tp_net = skb_network_offset(skb);
put_cmsg(msg, SOL_PACKET, PACKET_AUXDATA, sizeof(aux), &aux);
}